San Juan County (Oljato-Monument Valley)
May
Weather in San Juan County, Utah for May 2026
Your guide to San Juan County weather in May - trends and predictions
In general, the average temperature in San Juan County at the beginning of May is 17.3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 26.9 °F by the end of May.
San Juan County experiences moderate rainfall in May, with an average of 6 rainy days and a total precipitation of 14 mm.
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Temperatures
Rain 🌧️
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25
Dry days
6
Rainy days
0
Snow days
23°/8°
Temperatures
25 km/h
Avg max wind
36 %
Avg humidity
San Juan County Weather May
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Temperatures trend during May in San Juan County
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May weather in San Juan County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 18° /7° | 1 mm | 4 | |
| May 2 |  Overcast | 21° /7° | 0 mm | 5 | |
| May 3 | Overcast | 22° /5° | 0 mm | 5 | |
| May 4 |  Moderate or heavy rain shower | 19° /7° | 6.3 mm | 4 | |
| May 5 |  Heavy rain at times | 11° /5° | 2.4 mm | 3 | |
| May 6 | Overcast | 14° /3° | 0.1 mm | 3 | |
| May 7 | Patchy rain possible | 16° /6° | 1.8 mm | 4 | |
| May 8 |  Sunny | 22° /7° | 0 mm | 6 | |
| May 9 | Sunny | 23° /10° | 0 mm | 6 | |
| May 10 |  Partly cloudy | 24° /9° | 0 mm | 6 | |
| May 11 | Partly cloudy | 26° /10° | 0 mm | 7 | |
| May 12 | Partly cloudy | 28° /12° | 0 mm | 7 | |
| May 13 | Sunny | 23° /12° | 0 mm | 6 | |
| May 14 | Patchy rain possible | 15° /4° | 0.1 mm | 4 | |
| May 15 | Sunny | 20° /4° | 0 mm | 6 | |
| May 16 | Sunny | 23° /4° | 0 mm | 6 | |
| May 17 | Overcast | 23° /8° | 0 mm | 5 | |
| May 18 | Moderate rain at times | 18° /7° | 1.5 mm | 4 | |
| May 19 | Patchy rain possible | 15° /4° | 0.8 mm | 4 | |
| May 20 | Sunny | 21° /3° | 0 mm | 6 | |
| May 21 | Sunny | 27° /8° | 0 mm | 7 | |
| May 22 | Sunny | 28° /10° | 0 mm | 7 | |
| May 23 | Sunny | 28° /12° | 0 mm | 7 | |
| May 24 | Overcast | 25° /11° | 0 mm | 6 | |
| May 25 | Sunny | 25° /8° | 0 mm | 7 | |
| May 26 | Partly cloudy | 25° /8° | 0 mm | 7 | |
| May 27 | Overcast | 26° /10° | 0 mm | 6 | |
| May 28 | Overcast | 27° /12° | 0 mm | 6 | |
| May 29 | Overcast | 26° /13° | 0 mm | 6 | |
| May 30 | Partly cloudy | 29° /13° | 0 mm | 7 | |
| May 31 | Sunny | 30° /14° | 0 mm | 8 | |
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Important Notice
Our weather forecast for San Juan County in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Juan County forecast closer to your planned date for the most up-to-date weather information.
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San Juan County in May - FAQ
What are the expected maximum and minimum temperatures in San Juan County during May?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Juan County during May?
Expect minimal rainfall in San Juan County during May, with a total of 14 mm over approximately 6 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in San Juan County during May?
The average wind speed in San Juan County during May is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in San Juan County
Explore the daily rainfall trends and prepare for San Juan Countys May weather 💧
UV exposure in San Juan County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is San Juan County?Get accurate weather forecasts for San Juan County, located at latitude 37.031 and longitude -110.251. Stay updated with localized weather information tailored for San Juan County.
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